Datasets:
Gugu8
/
Code-Syntax-Expanded

Dataset card Data Studio Files
xet
 Community
1
wrong_code
stringlengths
3
123
correct_code
stringlengths
3
155
explanation
stringclasses
101 values
language
stringclasses
26 values
function test() {{ echo 'output'; }}
function test() {{ echo 'output'; }}
Correct.
PHP
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
$x = 5; if ($x -eq 5) { Write-Host 'yes' }
Correct.
PowerShell
for i in $(ls); do echo $i; done
for i in $(ls); do echo $i; done
Correct.
Shell
List(40,50,78)
List(40,50,78)
Correct.
Scala
var x = 43;
var x = 43;
Correct.
Dart
let x: Int = 'data'
let x: String = 'data'
Fix type.
Swift
System.out.println('world')
System.out.println('world');
Add semicolon.
Java
DELETE FROM items WHERE name=86
DELETE FROM items WHERE name=86;
Add semicolon.
SQL
println('hello')
println("hello")
Double quotes.
Scala
if a = 61
if a == 61
Use ==.
Ruby
try {{ throw 'hello'; }} catch(e) {{}}
try {{ throw new Error('hello'); }} catch(e) {{}}
Throw Error objects.
JavaScript
let foo = 83; let foo = 88;
let foo = 83; foo = 88;
Duplicate declaration.
JavaScript
{ "name": "value" }
{ "name": "value" }
Correct.
JSON
val bar = 6; bar = 68
var bar = 6; bar = 68
Use var for reassignment.
Scala
if (num = 37) {{}}
if (num == 37) {{}}
Use ==.
Kotlin
if (count = 18)
if (count == 18)
Use ==.
Scala
for (int i=0; i<82; i++) {{}}
for (int i=0; i<82; i++) {{}}
Correct.
Java
public static void main(String[] args) {{}}
public static void main(String[] args) {{}}
Correct.
Java
<person age=31>
<person age="31">
Quote attribute.
XML
index = 100
index=100
No spaces.
Shell
<div color=red>
<div style='color:red;'>
Use style attribute.
CSS
jwt.sign({{id:7}}, 'secret');
jwt.sign({{id:7}}, 'secret', {{expiresIn:'2h'}});
Add expiration.
Node.js
class Child Base:
class Child(Base):
Inheritance uses parentheses.
Python
let s = String::from("value"); let ref=&s; s.push_str("!");
let mut s = String::from("value"); let ref=&s; println!("{{}}", ref); s.push_str("!");
Cannot mutate while borrowed.
Rust
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('result')); app.listen(62);
const express = require('express'); const app = express(); app.get('/', (req,res) => res.send('result')); app.listen(62, () => console.log('listening'));
Add callback.
Node.js
WHERE age = '30'
WHERE age = 30
Don't quote integer.
SQL
print('info')
print('info')
Correct.
R
if ($a = 61)
if ($a == 61)
Use ==.
Perl
INSERT INTO orders VALUES ('hello',92)
INSERT INTO orders (name, role) VALUES ('hello',92);
Specify columns.
SQL
object Product {{ def main(args: Array[String]) = println("data") }}
object Product {{ def main(args: Array[String]): Unit = println("data") }}
Add return type Unit.
Scala
<center>world</center>
<div style='text-align:center;'>world</div>
Use CSS.
HTML
if (item = 32) {{}}
if (item == 32) {{}}
Use ==.
Java
x = info
x = 'info'
Quote strings.
Python
yield index
yield index
Correct yield.
Python
for i=1,91 do print(i) end
for i=1,91 do print(i) end
Correct.
Lua
Write-Host 'data'
Write-Host 'data'
Correct.
PowerShell
<root><child>text</child></root>
<root><child>text</child></root>
Correct.
XML
x := 34
x := 34
Correct.
Go
class Product {{ int bar; }} obj.bar=5;
class Product {{ public int bar; }} obj.bar=5;
Make field public.
Java
<p>data <b>data</p></b>
<p>data <b>data</b></p>
Nest properly.
HTML
SELECT COUNT(*) FROM users
SELECT COUNT(*) FROM users;
Missing semicolon.
SQL
User.save();
User.save().then(()=>{{}}).catch(err=>{{}});
Handle promise.
Node.js
title: result name: world,
title: result name: world
Remove comma.
YAML
echo 'test'
echo 'test';
Add semicolon.
PHP
<person name='test'/>
<person name="test"/>
Double quotes.
XML
while c > 15 c -= 1
while c > 15: c -= 1
Colon missing after while.
Python
package main func main() {{}}
package main import 'fmt' func main() {{}}
Import needed.
Go
List<int> list = [1,2,3];
List<int> list = [1,2,3];
Correct.
Dart
SELECT * FROM products WHRE email=33;
SELECT * FROM products WHERE email=33;
Fix WHERE.
SQL
arr(17)
if length(arr) >= 17, arr(17), end
Check length.
MATLAB
let val: number | null = null; val.toFixed(66);
let val: number | null = null; if(val!==null) val.toFixed(66);
Null check.
TypeScript
class Item {{ int x; }};
class Item {{ public: int x; }};
Make public.
C++
h1 {{ font-size:53px color:#fff; }}
h1 {{ font-size:53px; color:#fff; }}
Add semicolon.
CSS
cin >> y;
int y; cin >> y;
Declare variable.
C++
$x = 5; echo $x
$x = 5; echo $x;
Missing semicolon.
PHP
let vec=vec![79,44,95]; let first=&vec[0]; vec.push(66);
let mut vec=vec![79,44,95]; let first=vec[0]; vec.push(66);
Copy instead of reference.
Rust
lambda x: x+1
lambda x: x+1
Correct lambda.
Python
$x = 5; print $x
$x = 5; print $x;
Missing semicolon.
Perl
let x = 86;
let x = 86;
Correct.
JavaScript
ArrayList list = new ArrayList();
ArrayList<String> list = new ArrayList<>();
Use generics.
Java
list: - item1 - item2
list: - item1 - item2
Correct.
YAML
const person:Person = {{name:'message'}};
const person:Person = {{name:'message', age:63}};
Add missing property.
TypeScript
a > 39 & a < 55
a > 39 and a < 55
Use 'and' not '&'.
Python
int[] data = new int[36]; data[36] = 5;
int[] data = new int[36]; if (36 < data.length) data[36] = 5;
Check bounds.
Java
switch(val){{ case 97: break; }}
switch(val){{ case 97: break; default: break; }}
Add default case.
Java
match b {{ 1 => {{}} }}
match b {{ 1 => {{}} _ => {{}} }}
Match must be exhaustive.
Rust
name: output age: 22
name: output age: 22
Correct.
YAML
let data: i32 = "world";
let data: &str = "world";
Type mismatch.
Rust
$values[28]
if ($values.Count -gt 28) {{ $values[28] }}
Check bounds.
PowerShell
int* user = nullptr; *user=5;
int* user = new int; *user=5;
Allocate memory.
C++
fn handle() -> i32 {{ 72 }}
fn handle() -> i32 {{ 72 }}
Correct.
Rust
<entry><name>output</name><age>94</age></entry
<entry><name>output</name><age>94</age></entry>
Add closing >.
XML
<hr></hr>
<hr>
Self-closing.
HTML
assert data > 100
assert data > 100
Correct.
Python
const num;
const num = 45;
Initialize const.
JavaScript
baz
baz()
Add parentheses.
Swift
@media screen {{ body {{}} }}
@media screen {{ body {{}} }}
Correct.
CSS
'test' + 21
'test' + 21.to_s
Convert int.
Ruby
if ($result = 28) {{}}
if ($result -eq 28) {{}}
Use -eq.
PowerShell
{{'value':53, 'name' 36}}
{{'value':53, 'name':36}}
Colon missing.
Python
let index = 22; index += 1;
let mut index = 22; index += 1;
Need mut to modify.
Rust
SELECT name email FROM users;
SELECT name, email FROM users;
Add comma.
SQL
disp('data')
disp('data')
Correct.
MATLAB
foo == '7'
foo === 7
Use strict equality.
JavaScript
$arr[94] = 5;
if (isset($arr[94])) $arr[94] = 5;
Check existence.
PHP
if (num = 13)
if (num == 13)
Use ==.
R
console.log('output'
console.log('output')
Close parenthesis.
JavaScript
// comment
/* comment */
Use /* */.
CSS
x = 5; if x > 3, disp('large'), end
x = 5; if x > 3, disp('large'), end
Correct.
MATLAB
fmt.Println 'hello'
fmt.Println('hello')
Missing parentheses.
Go
const foo = 21; foo = 23;
let foo = 21; foo = 23;
Cannot reassign const.
JavaScript
if a = 98 {{}}
if a == 98 {{}}
Use ==.
Swift
data.forEach(function(a) {{ console.log(a); }})
data.forEach((a) => {{ console.log(a); }})
Arrow functions are cleaner.
JavaScript
UPDATE orders SET name='world' WHERE status=81
UPDATE orders SET name='world' WHERE status=81;
Add semicolon.
SQL
'info' + 75
'info' + str(75)
Can't add int to string.
Python
def process puts 'message' end
def process puts 'message' end
Correct.
Ruby
#footer {{ color: #333; }}
#footer {{ color: #333; }}
Correct.
CSS
if (result) console.log('yes') else console.log('no')
if (result) console.log('yes'); else console.log('no');
Missing semicolon.
JavaScript
[66, 13, 93
[66, 13, 93]
Close bracket.
Ruby
{{'age':'info'}}
{{"age":"info"}}
Use double quotes.
JSON